diff --git a/code/game/objects/radiation.dm b/code/game/objects/radiation.dm
index 2498b6fe825..0016fdae514 100644
--- a/code/game/objects/radiation.dm
+++ b/code/game/objects/radiation.dm
@@ -1,5 +1,5 @@
 /proc/radiation_pulse(turf/epicenter, heavy_range, light_range, severity, log=0)
-	if(!epicenter) return
+	if(!epicenter || !severity) return
 
 	if(!istype(epicenter, /turf))
 		epicenter = get_turf(epicenter.loc)
@@ -11,6 +11,7 @@
 	if(heavy_range > light_range)
 		light_range = heavy_range
 
+	var/light_severity = severity * 0.5
 	for(var/atom/T in range(light_range, epicenter))
 		var/distance = get_dist(epicenter, T)
 		if(distance < 0)
@@ -21,9 +22,9 @@
 			if(prob(50))
 				T.rad_act(severity)
 			else
-				T.rad_act(severity / 2)
+				T.rad_act(light_severity)
 		else if(distance <= light_range)
-			T.rad_act(severity / 2)
+			T.rad_act(light_severity)
 	return 1
 
 /atom/proc/rad_act(var/severity)
diff --git a/code/modules/power/gravitygenerator.dm b/code/modules/power/gravitygenerator.dm
index 104a437c2f2..c720875aeb9 100644
--- a/code/modules/power/gravitygenerator.dm
+++ b/code/modules/power/gravitygenerator.dm
@@ -350,7 +350,7 @@ var/const/GRAV_NEEDS_WRENCH = 3
 
 
 /obj/machinery/gravity_generator/main/proc/pulse_radiation()
-	radiation_pulse(get_turf(src), 3, 7, 20, 1)
+	radiation_pulse(get_turf(src), 3, 7, 20)
 
 // Shake everyone on the z level to let them know that gravity was enagaged/disenagaged.
 /obj/machinery/gravity_generator/main/proc/shake_everyone()